Invalid-bedstead.



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C. H. DANFORTH.

lNVALID BEDSTEAD.

APPLICATION FILED MAR l9. i918.

Patented Nov. 5, 1918.

C. H. DANFORTH I INVALID BEDSTEAD. APPLICATlON FlL ED MAR-19.1918.

Patented Nov. 5, 1918.

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C. H. DANFORTH.

INVALID BEDSTEAD.

APPLICATION FILED MAR. I9, 1918.

Patented Nov. 5, 1918.

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Invnnrn-snnsa'nnn S peoificationof Letters Patent.

a lieanoaeleanmh .19, 191s. seriallvo, assess. a

Terr ll witomit may concern: a Be it known that l, Cixannns Dan- FORTH, a citizen ofthe United QState America, and a. residentof Danve rs, in the county of Essex and State of Massachusetts,

have invented certain new and useful I111 provements in lnvalid-Bedsteads of which the following is a specification.

This inventionrelates to vberilsteads and particularly to that class of bedsteads which are used for invalids, the particular object of the invention being toprovide a device of this character which may be adjustedso that the occupant may ,be moved into a sitclined position.

A further object of the invention is to provide the main frame with oscillating cam-shaped arms coacting with the backrest whereby said back-rest may be. ;m0ved to any desired inclinationand locked in adjusted position.

The invention consists in certain novel featuresof construction and arrangement of parts which will be fully understood hyreferenceto the description ofthe drawings a-nd to the claims to be hereinafter given.

For the purposeiof illustratingthe 'invens tion one preferred form thereof is ,illustrated in the drawings, this form having been found to givewsatisfactory and reliable results, although; it iisato be understood that the various instrumentalities of which the invention consists can b svariously arranged and organized and the invention is;notlimited to {the precise arrangement and organi zation of these a, instrumentalities as herein shown vand described, except as required by the scope of the appendedlclaims.

' ()fthedrawings:

Figure ,1 i represents a plan of a bedstead embodying the 3 principles of ;the presentinvention, with the; body lifting wfname removed.

Fig, ,2 represents a side elevation ofthe lFig. 3 represents atransverse section of the same on line 3, 3, on Fig. 2,

clineda position as shown ig. & represents a transverse section of the same on line 4, A, on ,Fig. ,2, with the spring horizontal.

ig. 5 represents avdetail in plan of a corner of the jrbodydifting frame and showing the means for stretching the transversely disposed flexible bands thereof.

Fig. 6 representsa section thereof on line 6, 6, on Fig. 5

Fig. 7 represents an end elevation of the same. a

Fig. 8 represents a sectionaldetail of the means for elevating the body-"lifting frame.

9 represents a section of same on line 9, 9,.on 8.

lBig.l0 represents an end elevation of the same, and a Fig, 11' represents a detail of the flexible band showing the engaging hook thereof.

Similar characters designate like parts throughout the several figures of the drawings.

In the drawings, 10 and 11 are respectively the head and footframesof a bed stead connected together by the side rails 12 to which midway of their length tlIQySBCllIBd brackets 13 supporting the sidebars 14c.

To the head end of theside bars 14; there is pivoted at 15a llshaped frame 16 adapted to be moved about the ,pivot 15 into ankinin Fig. 2 thereby forming a suitable backrest forthepatient when placed in a reclining or sitting position.

The elevating of the brackehrest 16 is accomplished by ca-inshaped arms 17 hearing against the underside of the frame "16, said arms being secured toa shaft 18 mounted in bearings 19 secured to the upper face of the i lBJRilS 1 a a To the shaft 18 are also secured gear segments 20 which may be formed integral with the cam members 17 as shown in the drawings. p a

In bearingsQl isecuredto th-e upper faceof therails 12 is a revoluble sl1aft2'2r having secured thereon gears 23 meshing withwthe gear segments 20.

Whenthe shaft 22is rotated in the directlon of the arrow a on Fig. Qof the drawings vtheicam arms 17 will raise th-eouter ends of the U-shapedframeabout the pivots 15; the we ght of "the body of the patient retaining thewzll shaped :frame 16 in contact withsaid arms 17 during the raising and lowering of said arms.

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The shaft 22 has secured thereto, at opposite ends, ratchet wheels 24 with which pawls 25 are adapted to engage to prevent the accidental lowering of said U-shaped frame 16 when in its adjusted position.

The pawls 25 are pivoted at 26 to the side rails 12 and may be moved about said pivots to disengage said ratchets 24 when it is desired to lower the back-rest 16.

Each end of the shaft 22 is provided with a squared socket 27 adapted to receive the squared end of a crank by which rotation may be imparted to the shaft in the direction of the arrow a or by which the lowering of the back-rest 16 may be regulated.

When lowered the arms 17 retain the U- shaped back-rest l6 horizontal in alinement with the side bars 14.

To the foot end of the side bars 14 are pivoted at 28, bars 29, to the opposite ends of which is pivoted a U-shaped frame forming a foot-rest when the bars 29 are inclined downwardly as shown in Fig. 2 and the U- shaped member 30 has been moved perpendicularly thereto.

At 31 are pivoted to the side bars 14, the bent bars 32 having pivoted thereto near their outer ends the links 33, 34, the former being pivotally connected to the foot-rest 30 and the latter being pivotally connected to the bars 29.

When the bars 29, 30 are moved upwardly about their pivots 28, 31, the U-shaped member 00 and'thebars 29 may all be brought into a horizontal position in alinement with the side bars 14.

The position of the members 29, 30 is controlled by the position of the rollers 35 on which the bars 32 rest.

These rollers 35 are secured to a shaft 36 mounted in bearings in the slides 37 which are adapted to be moved endWise of the side rails 12, each slide 37 having a flange 38 at its upper end disposed in a groove in the upper face of a rack 39 secured to the under face of the horizontal flange of the side rail 12as shown in Fig. 3.

These racks 39 have teeth 40 on their under-faces and spur gears 41 on the shaft 36 mesh with these teeth 40.

The opposite ends of the shaft 36 are provided with squared sockets 42 adapted to receive the squared end of an operating crank whereby the shaft 36 may be rotated thereby causing the slides 37 to be moved along the racks 39 until the required inclination of the bars 29 has been attained or said bars and the foot-rest 30 have been alined with the side bars 14.

To the outer ends of the bent bars 32 are pivoted at 43, struts 44, having in one edge thereof a plurality of notches 45 adapted to engage a crossbar 46 on the foot frame thereby raising the outer end of the U- shaped frame 30 considerably above the pivots 28 thus providing means whereby the feet and legs of the patient may be raised considerably above the body which is often desirable.

A woven spring 47 is attached at its edges to the side bars 14, the U-shaped frame 16 the bars 29 and the U-shaped frame 30 and on this spring 47 may be disposed the usual mattress.

Revolubly mounted in bearings 48 at opposite 'ends of the side rails 12 is a shaft 49 having at each end a squared socket 50 adapted to receive a square end of an operating crank by which said shaft may be rotated.

On each end of the shaft 49 is a drum 51 and a ratchet wheel 52 with which a pawl 53 coacts to prevent the rotation of said drum 51 in one direction under normal conditions.

Each drum 51 has secured thereto one end of a cord 54, which cord passes over a sheave 55 downwardly around another sheave 56, then over the sheave to 0. lug 57 to which it is secured.

The lug 57 and the sheave 56 are mounted upon the lower end of a tubular member 58 surrounding the central vertical rod 59 forming a part of the head or foot frames 10,11.

By means of this system of blocks and tackle the tubular members 58 are raised whenever the drums 51 are rotated about their axes and said members may be lowered again to their normal positions when the pawls 53 are disengaged from the ratchet wheels 52.

At the upper end of each tubular member 58 is a lug 58 to which is secured a chain 60 or similar flexible member the opposite ends of which are secured at 61 to the end rails 62 of the supplemental body-supporting frame which is composed of said end rails 62, :1 connecting rail 63 at one side and a revoluble connecting member 64 on the other side.

This member 64 is tubular as shown in Fig. 6 and in its opposite ends are positioned hubs 65 of ratchet wheels 66 with which c0- act pawls 67 pivoted at 68 to the end rails 62.

The pawls 67 permit the members 64 to be rotated freely in the direction of the arrow 5 on Fig. 4 but prevent rotation in the opposite direction as long as said pawls 67 are in engagement with the ratchets 66.

The hubs 65 are revolubly mounted in the bearings 69 secured to the end rails 62 and are provided with squared sockets 70 adapted to receive the squared end of an operating crank by which said revoluble connecting member 64 may be rotated.

Between the side connecting rail 63 and the revoluble connecting member 64- are a plurality of flexible bands 71 extending transversely of the supplemental body-supporting frame.

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These bands 71 have atopposite ends 2- shaped hooks 72 adapted to be inserted in holes in the rail 63 and tubular member 64 and when thus inserted they are adapted to y be drawn taut by the rotation of the tubular member 64.- a

When the atient isstretched flat up on the bed the ban s 71 will rest fiatupon the mattress with the frame 6263-64 surrounding the edges of said mattress, and when the patient is to be moved into a reclining or sitting position those bands 71 opposite the back-rest, the leg-rest, and the foot-rest are temporarily removed and the frame 62, 63, 64 remains in its lowest position surrounding themattress.

If it is desired to lift the patient from the mattress for anv particular reason the bands 71 are positioned in the members 63-434 for their entire length and then by rotating the drum 51 the entire supplemental frame with the patient thereon may be quickly lifted into the position shown in Fig. 2, and retained in this position as long as desired.

While the body supporting frame is in this raised position, the bed clothes and mat tress may be changed, and if it is desired to give the patient some particular attention every part of the body is accessible to the doctor or nurse.

Owing to the frame 62, 63, 64 being hung from the lugs 58 by the flexible chain connections 60 the frame may be tilted into an inclined position thereby making it possible to more conveniently reach certain parts of the body.

regulated by the operating crank inserted in the socket 50. p

All of the sockets 27, 42, 50, 70 are of the same size and shape so that a single operating crank may be used in either of them.

The legs of the end frames 10, 11 are provided with a connecting bar 73 between which, and the connecting bar 46 is a casing 74 inclosing the lower ends of the tubular members 58 and the sheaves and 56.

This makes a very convenient bedstead for invalids in which the various parts may be readily changed in position to accommodate the various conditions of the patients occupyng the same,

It is believed that the operation of the invention and its many advantages will be fully understood without further descrip tion.

Having thus described my invention, I claim: y

1. In a device of the class described, a bed frame; a bed spring thereon; a supplemental body-supporting frame adapted to surround said bed spring and having its side members provided with a plurality of spaced holes; means for raising said suplemental frame; and flexible bands extending transversely of said frame and having at their opposite ends Z-shaped hooks the ends of which are adapted to be positioned in said holes.

2. ln adevice of the class described, a bed frame; a bed spring thereon; a til-shaped frame having its side portion provided with a plurality of spaced holes; a tubular member revolubly mounted in the outer ends of the end portions and having a plurality of alined holes therein; means for rotating said tubular member about its axis; means for retaining said tubular member in adjusted position; and flexible bands extending transversely of said frame and having at their opposite ends Z-shaped hooks the ends of which are adapted to be positioned in said holes.

Signed by me at 4 Post Ofiice Sq Boston, Mass, this 21st day of February, 1918.

CHARLES H. DANFUR'JPH.

Witnesses:

WALTER E. lLoMnAnn, NATHAN C. Loire.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner on Eatents, Washington, D. 1U. 

